Cu2WS4

metal

· Cu2WS4

Cu₂WS₄ is a copper-tungsten sulfide compound that belongs to the family of transition metal chalcogenides, a class of materials attracting research attention for their electronic and catalytic properties. This is primarily an experimental material in early-stage development rather than an established commercial product. The material's combination of multiple metal centers (copper and tungsten) with sulfur ligands positions it as a candidate for energy storage, catalysis, or photovoltaic applications where tunable electronic structure is advantageous.

photocatalytic materials (research)hydrogen evolution catalystsenergy storage electrodes (experimental)thermoelectric devices (emerging)solid-state electronics (development)

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Filter by

Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	2,250.5	ksi	DFT
↳	5,186.5	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2300	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	1,322.1	ksi	DFT
↳	3,296.7	ksi	DFT · OptB88vdW

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1745	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.9010	eV	DFT · OptB88vdW
↳	1.696	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	7.784	-	DFT · OptB88vdW
↳	6.350	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.515	-	DFT · OptB88vdW
↳	7.603	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.3410	C/m²	DFT · OptB88vdW
↳	0.01844 range 0.00825–0.02862median of 2 measurements	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00000232	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00195	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	1,052.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	341.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	29.26	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.07520	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5019	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Cu2WS4 — Properties & Data | MatWorld

Cu2WS4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control